1 //  (C) Copyright John Maddock 2005.

     2 //  Use, modification and distribution are subject to the

     3 //  Boost Software License, Version 1.0. (See accompanying file

     4 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

     5 

     6 #ifndef BOOST_TR1_FUNCTOR_IT_HPP_INCLUDED

     7 #  define BOOST_TR1_FUNCTOR_IT_HPP_INCLUDED

     8 

     9 # include <boost/iterator/iterator_facade.hpp>

    10 

    11 namespace boost{ namespace tr1_details{

    12 

    13 template <class Func, class R>

    14 struct functor2iterator : boost::iterator_facade<functor2iterator<Func,R>, const R, std::input_iterator_tag>

    15 {

    16    functor2iterator() : m_func(0){}

    17    functor2iterator(Func& f)

    18       : m_func(&f)

    19    {

    20       m_val = (*m_func)();

    21    }

    22    const R& dereference()const

    23    { return m_val; }

    24    void increment(){ m_val = (*m_func)(); }

    25    bool equal(const functor2iterator&)const

    26    { return false; }

    27 private:

    28    Func* m_func;

    29    R m_val;

    30 };

    31 

    32 } }

    33 

    34 #endif